-LRB- CNNMoney -RRB- -- Here 's one way to make your iPhone hacker-proof : Ask hackers for advice .

I recently caught up with security researchers at the online security conference Infiltrate . At dinner one evening , I placed my iPhone on the table . I was surrounded by ethical hackers whose jobs are to find vulnerabilities before the bad guys and exploit security flaws .

`` I could hack your phone pretty easily , '' security researcher Tomi Tuominen mentioned . Obviously , I took notice .

For the next 20 minutes , Tuominen and information security researcher Robert Lee gave me a tutorial on making my iPhone settings hacker-proof . Some of them are basic -- like changing your four character password to something more complex . Others take a bit more work , such as using settings to limit ad tracking . For more tips , check out the video .

@highlight

Hackers give advice on how to protect your iPhone

@highlight

Tips came at the Infiltrate security conference